| Title: | AdvFS Support/Info/Questions Notefile |
| Notice: | note 187 is Freq Asked Questions;note 7 is support policy |
| Moderator: | DECWET::DADDAMIO |
| Created: | Wed Jun 02 1993 |
| Last Modified: | Fri Jun 06 1997 |
| Last Successful Update: | Fri Jun 06 1997 |
| Number of topics: | 1077 |
| Total number of notes: | 4417 |
| T.R | Title | User | Personal Name | Date | Lines |
|---|---|---|---|---|---|
| 187.1 | The 'df' command does not display correct information | DECWET::STOPPANI | Thu Jul 21 1994 13:18 | 22 | |
| 187.3 | ADVFS Commands | DECWET::STOPPANI | Thu Jul 21 1994 17:18 | 33 | |
| 187.4 | Where are ADVFS patches located? | DECWET::STOPPANI | Fri Jul 22 1994 17:48 | 83 | |
| 187.5 | Why can't I mount an ADVFS v3.0 fileset on OSF/1 v2.0 systems | DECWET::STOPPANI | Tue Jul 26 1994 15:54 | 20 | |
| 187.6 | ADVFS versions vs. OSF/1 versions | DECWET::STOPPANI | Wed Aug 17 1994 18:06 | 31 | |
| 187.7 | Which version(s) is/are supported on which release(s) of DEC OSF/1? | NOSTRL::DAVIES | Close, but no banana. | Fri Aug 19 1994 06:17 | 16 |
| 187.8 | versions | DECWET::HUNT | Liz Hunt | Fri Aug 19 1994 12:55 | 4 |
| 187.9 | AdvFS is not AFS | DECWET::PENNEY | Johnny's World II | Sat Aug 20 1994 09:34 | 15 |
| 187.10 | ADVFS Utilities in /usr/field | DECWET::STOPPANI | Fri Aug 26 1994 12:35 | 90 | |
| 187.11 | What is the .tags directory and how is it used? | DECWET::STOPPANI | Fri Aug 26 1994 13:56 | 195 | |
| 187.12 | How do I move a disk with AdvFS on it to another machine? | DECWET::MARTIN | Fri Sep 09 1994 10:54 | 47 | |
| 187.13 | AdvFS Q&A | DECWET::HUNT | Liz Hunt | Fri Nov 04 1994 17:52 | 353 |
| 187.14 | increasing volume size | MPGS::LAVIN | Thu Jan 26 1995 10:36 | 97 | |
| 187.15 | no auto-recognize of LSM expand | DECWET::HUNT | Liz Hunt | Wed Feb 01 1995 10:01 | 11 |
| 187.16 | thanks...for the response..its on my list tooo | MPGS::LAVIN | Thu Feb 02 1995 11:25 | 21 | |
| 187.17 | XIRTLU::schott | Eric R. Schott USG Product Management | Fri Feb 03 1995 09:58 | 7 | |
| 187.18 | HSZ40 controllers and dxadvfs | DECWET::MARTIN | Fri Mar 10 1995 11:11 | 35 | |
| 187.19 | Tuning tips for advfsd. | DECWET::MARTIN | Thu Mar 20 1997 11:11 | 38 | |
Here are some tuning tips for advfsd. The AdvFS daemon, aka advfsd, has some severe scalability problems in v4.0x. They're being worked on for Steel, but as of now have not yet been solved. In the meantime, here are some tuning tips for those of you who are running into problems with advfsd being a performance hog. First, if no one is using dtadvfs, the AdvFS GUI, de-install the daemon. Its only purpose in life is to serve the GUI. 'setld -d AFAADVDAEMONxxx' will do it. Or if there is a very rare usage of the GUI, then you can kill -9 the currently running daemon, and remove /sbin/rc3.d/S53advfsd to prevent it from being started at boot-time. When you want to run dtadvfs, just run advfsd first, and give it a couple of minutes before starting up dtadvfs. Other things that will help reduce advfsd's CPU and I/O consumption are: 1) Reduce the polling frequency of advfsd. The default is 5 minutes. Unless you really need the latest up-to-date information, you can reduce this significantly. In dtadvfs, the AdvFS/Options screen has an "Agent state monitor" field to change this setting. 2) Don't leave unmounted filesets around. These take a long time to gather statistics on. *Especially* if there are inactive domains (domains with no mounted filesets) with several unmounted filesets in them. 3) Use the disks.ignore file. This probably won't give you a significant bonus, but if there are disks that aren't in use, it could take several seconds per disk to spin it up and gather data from it. Another factor that causes slow-downs is LSM. The more disk groups and volumes there are in LSM, the longer it takes advfsd to poll the system. I don't know what can be done to help this situation, though. Hopefully with Steel we'll get rid of the vast majority of the polling activity that we're currently forced to do. --Ken | |||||